Hunger claws at your belly. It tugs at your intestines, which begin to writhe, aching to be fed. Being hungry generates a powerful and often unpleasant physical sensation that’s almost impossible to ignore. After you’ve reacted by gorging on your morning pancakes, you start to experience an opposing force: fullness. But how does your body actually know when you’re full? Hilary Coller explains.

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TED-EdNovember 13, 2017

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1:14 – Animators: when water is drunk the stomach feels full for it’s streching the whole thing. As I understood, the stomach should only be angry as the water rapidly left. Not while it was still full.

It sucks when the communication between the stomach and the brain screws up. I was in a coma and had a feeding tube to my stomach for a few months. I was hungry but not hungry. Then when I got the tube out I ate but my stomach was small and less then an hour latter I was hungry again.